1. Hyperbranched tsarin
A matsayin sabon nau'in polymer, polymer hyperbranched yana da tsari mai kamanni, adadi mai yawa na ƙungiyoyin ƙarewa kuma babu iska tsakanin sarƙoƙi na ƙwayoyin cuta.Polybranched polymers suna da abũbuwan amfãni daga sauƙi narkar da, low narkewa batu, low danko da high reactivity.Don haka, ana iya gabatar da ƙungiyoyin acryloyl da ƙungiyoyin hydrophilic don haɗa hasken ruwa na curing oligomers, wanda ke buɗe sabuwar hanya don shirya resin UV Waterborne.
An shirya Polyester UV curable waterborne hyperbranched (whpua) ta hanyar amsawar Hyperbranched Polyester mai wadata a rukunin hydroxyl tare da succinic anhydride da ipdi-hea prepolymer, kuma a ƙarshe an cire shi da Organic amine don samar da gishiri.Sakamakon ya nuna cewa saurin warkewar haske na guduro yana da sauri kuma kaddarorin jiki suna da kyau.Tare da karuwar abun ciki mai wuyar gaske, zafin canjin gilashin na resin yana ƙaruwa, ƙarfin ƙarfi da ƙarfi kuma yana ƙaruwa, amma elongation a hutu yana raguwa.An shirya polyesters da yawa daga polyanhydrides da monofunctional epoxides.An gabatar da Glycidyl methacrylate don ƙarin amsawa tare da ƙungiyoyin hydroxyl da carboxyl na polymers hyperbranched.A ƙarshe, an ƙara triethylamine don daidaitawa da samar da gishiri don samun UV da za a iya warkewa ta ruwa mai ƙarfi polyesters.Sakamakon ya nuna cewa yawancin abubuwan da ke cikin rukuni na carboxyl a ƙarshen resin hyperbranched na tushen ruwa, mafi kyawun ruwa mai narkewa;Matsakaicin warkewar guduro yana ƙaruwa tare da haɓaka ɗakuna biyu na ƙarshe.
2 Organic-inorganic hybrid tsarin
Waterborne UV haske warke Organic / inorganic matasan tsarin ne mai tasiri hade da Waterborne UV guduro da inorganic kayan.Abubuwan amfani da kayan inorganic irin su juriya mai girma da juriya na yanayi suna gabatar da su a cikin guduro don inganta cikakkun kaddarorin fim ɗin da aka warke.Ta hanyar gabatar da barbashi na inorganic kamar nano-SiO2 ko montmorillonite a cikin tsarin warkarwa na UV ta hanyar watsawa kai tsaye, hanyar sol-gel ko hanyar shiga tsakani, ana iya shirya UV curing Organic / inorganic hybrid system.Bugu da ƙari, ana iya shigar da monomer na organosilicon a cikin jerin kwayoyin halitta na UV oligomer mai ruwa.
Organo / inorganic ruwan shafa fuska (Si PUA) an shirya ta hanyar gabatar da ƙungiyoyin polysiloxane a cikin sashin taushi na polyurethane tare da tashoshi biyu hydroxybutyl polydimethylsiloxane (PDMS) da diluting tare da acrylic monomers.Bayan warkewa, fim ɗin fenti yana da kyawawan kaddarorin jiki, babban kusurwar lamba da juriya na ruwa.Hyperbranched hybrid polyurethane da haske warke hyperbranched polyurethane an shirya su daga polyhydroxy hyperbranched polyurethane, succinic anhydride, silane hada guda biyu wakili KH560, glycidyl methacrylate (GMA) da hydroxyethyl methacrylate.Sa'an nan, Si02 / Ti02 Organic-inorganic hybrid sol na haske warke hyperbranched polyurethane an shirya ta hanyar gauraye da hydrolyzing tare da tetraethyl orthosilicate da n-butyl titanate a daban-daban rabbai.Sakamakon ya nuna cewa tare da haɓakar abubuwan da ke cikin inorganic, taurin pendulum na rufin matasan yana ƙaruwa kuma yanayin ƙasa yana ƙaruwa.A surface ingancin SiO2 matasan shafi ne mafi alhẽri daga na Ti02 matasan shafi.
3 dual curing tsarin
Domin warware gazawar na uku-girma curing na Waterborne UV guduro da kuma magance kauri shafi da launi tsarin, da kuma inganta m kaddarorin na fim, masu bincike sun ɓullo da dual curing tsarin hada haske curing tare da sauran curing tsarin.A halin yanzu, warkar da haske, warkar da zafi, warkar da haske / redox curing, free radical light curing / cationic haske curing da haske warkewa / rigar waraka tsarin ne gama gari na magani, da kuma wasu tsarin da aka yi amfani.Misali, mannen kariyar lantarki ta UV tsarin warkarwa biyu ne na warkar da haske / redox ko warkar da haske / rigar magani.
An gabatar da aikin monomer ethyl acetoacetate methacrylate (amme) a cikin ruwan shafa fuska na polyacrylic acid, kuma an gabatar da ƙungiyar warkar da haske ta hanyar ƙarawa ta Michael a cikin ƙananan zafin jiki don haɗa zafi curing / uv curing waterborne polyacrylate.Dry a akai-akai zazzabi na 60 ° C, 2 x 5 A karkashin yanayin 6 kW high-matsa lamba mercury fitilar sakawa, da taurin guduro bayan samuwar fim ne 3h, barasa juriya ne 158 sau, da kuma alkali juriya ne 24. hours.
4 epoxy acrylate / polyurethane acrylate tsarin hadawa
Epoxy acrylate shafi yana da abũbuwan amfãni daga high taurin, mai kyau adhesion, high sheki da kuma mai kyau sinadaran juriya, amma yana da matalauta sassauci da kuma brittleness.Ruwan polyurethane acrylate yana da halaye na juriya mai kyau da sassauci, amma juriya mara kyau.Yin amfani da gyare-gyaren sinadarai, haɗaɗɗun jiki ko hanyoyin haɗin kai don haɗawa da kyau ta hanyar resin guda biyu na iya haɓaka aikin guduro ɗaya da ba da cikakkiyar wasa ga fa'idodin su, ta yadda za a haɓaka ingantaccen tsarin warkarwa na UV tare da fa'idodi biyu.
5 macromolecular ko polymerizable photoinitiator
Yawancin masu amfani da hoto sune aryl alkyl ketone ƙananan ƙwayoyin cuta, waɗanda ba za su iya bazuwa gaba ɗaya ba bayan warkar da haske.Sauran ƙananan ƙwayoyin cuta ko samfurori na photolysis za su yi ƙaura zuwa saman rufi, haifar da launin rawaya ko wari, wanda zai shafi aiki da aikace-aikacen fim ɗin da aka warke.Ta hanyar gabatar da photoinitiators, ƙungiyoyin acryloyl da ƙungiyoyin hydrophilic cikin polymers masu ƙarfi, masu bincike sun haɗa photoinitiators na macromolecular polymerizable na ruwa don shawo kan rashin amfani na ƙananan masu daukar hoto.
Lokacin aikawa: Mayu-09-2022